Regensburg 2022 – scientific programme

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MM: Fachverband Metall- und Materialphysik

MM 16: Mechanical Properties

MM 16.2: Talk

Tuesday, September 6, 2022, 14:15–14:30, H44

orientation dependence of the deformation mechanisms of cocrfeni high entropy alloys — •haihong jiang, martin peterlechner, and gerhard wilde — Westfälische Wilhelms-Universität Münster, Institut für Materialphysik, Wilhelm-Klemm-Str. 10, D-48149 Münster, Germany

The mechanical behavior of CoCrFeNi high entropy alloys in different deformation states have been analyzed by nanoindentation. Microhardness and Young's modulus values were determined at high accuracy as a function of the specified crystallographic orientations, which were measured by electron backscatter diffraction (EBSD). Modulus and Poisson's ratio values of polycrystalline CoCrFeNi were calculated from experimentally determined ultrasonic velocities for comparison. This approach allows for in-depth analysis and comparison of the mechanical properties as function of the local orientations of the crystal lattice in dependence of the thermo-mechanical history.